U.S. patent application number 13/980704 was filed with the patent office on 2014-01-16 for method and system for notification of scrambling code identification signalling group.
This patent application is currently assigned to ZTE Corporation. The applicant listed for this patent is Wei Gou, Senbao Guo, Min Ren, Yunfeng Sun, Chenchen Zhang. Invention is credited to Wei Gou, Senbao Guo, Min Ren, Yunfeng Sun, Chenchen Zhang.
Application Number | 20140018086 13/980704 |
Document ID | / |
Family ID | 46515133 |
Filed Date | 2014-01-16 |
United States Patent
Application |
20140018086 |
Kind Code |
A1 |
Guo; Senbao ; et
al. |
January 16, 2014 |
Method and system for notification of scrambling code
identification signalling group
Abstract
Disclosed in the present disclosure is a method for notification
of scrambling code identification signalling group, and the present
disclosure comprises: a network side transmits a scrambling code
identification signalling group to a receiver; the receiver
generates a corresponding scrambling code sequence of a
demodulation pilot according to the scrambling code identification
signalling group, generates a pilot symbol sequence according to
the scrambling code sequence of the demodulation pilot, and
performs channel estimation according to the pilot symbol sequence.
The present disclosure also provides a system for implementing the
notification of scrambling code identification signalling group.
According to the technical solution in the disclosure, the receiver
can obtain, according to the scrambling code identification
signalling group transmitted from the network side, the scrambling
code sequence of the demodulation reference signal and/or
demodulation pilot which is the same as that of the network side,
and thus interference can be avoided.
Inventors: |
Guo; Senbao; (Shenzhen,
CN) ; Sun; Yunfeng; (Shenzhen, CN) ; Zhang;
Chenchen; (Shenzhen, CN) ; Ren; Min;
(Shenzhen, CN) ; Gou; Wei; (Shenzhen, CN) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Guo; Senbao
Sun; Yunfeng
Zhang; Chenchen
Ren; Min
Gou; Wei |
Shenzhen
Shenzhen
Shenzhen
Shenzhen
Shenzhen |
|
CN
CN
CN
CN
CN |
|
|
Assignee: |
ZTE Corporation
Shenzhen, Guangdong
CN
|
Family ID: |
46515133 |
Appl. No.: |
13/980704 |
Filed: |
November 29, 2011 |
PCT Filed: |
November 29, 2011 |
PCT NO: |
PCT/CN2011/083132 |
371 Date: |
July 19, 2013 |
Current U.S.
Class: |
455/450 |
Current CPC
Class: |
H04L 5/0035 20130101;
H04L 5/0048 20130101; H04L 25/0224 20130101; H04L 1/0038 20130101;
H04L 5/0091 20130101; H04L 25/03866 20130101 |
Class at
Publication: |
455/450 |
International
Class: |
H04L 5/00 20060101
H04L005/00 |
Foreign Application Data
Date |
Code |
Application Number |
Jan 19, 2011 |
CN |
201110022108.7 |
Claims
1. A method for notification of scrambling code identification
signalling group, wherein the method comprises: receiving, by a
receiver, a scrambling code identification signalling group;
generating, by the receiver, a corresponding scrambling code
sequence of a demodulation pilot according to the scrambling code
identification signalling group; generating a pilot symbol sequence
according to the scrambling code sequence of the demodulation
pilot; and performing channel estimation according to the pilot
symbol sequence.
2. The method according to claim 1, wherein the scrambling code
identification signalling group comprises a virtual identification
signalling, and/or a virtual identification enabling signalling
and/or a virtual identification index signalling.
3. The method according to claim 2, wherein when the scrambling
code identification signalling group comprises the virtual
identification signalling, the virtual identification enabling
signalling and the virtual identification index signalling, the
step of receiving, by a receiver, a scrambling code identification
signalling group and the step of generating, by the receiver, a
corresponding scrambling code sequence of a demodulation pilot
according to the scrambling code identification signalling group
comprise: receiving, by the receiver, the virtual identification
signalling via a System Information Block (SIB) or a Radio Resource
Control (RRC) signalling, and receiving, by the receiver, the
virtual identification signalling in the received SIB or RRC
signalling; receiving, by the receiver, the RRC signalling
including the virtual identification enabling signalling to
indicate whether the receiver is a potential virtual identification
signalling user, performing blind detection for Downlink Control
Information (DCI) by 1 bit when the receiver is a potential virtual
identification signalling user, and performing detection for the
DCI by 0 bit when the receiver is not a potential virtual
identification user; obtaining, by the receiver, the virtual
identification index signalling corresponding to the receiver
according to the detection, and determining the virtual
identification signalling for generating the scrambling code
sequence of the demodulation pilot according to the corresponding
virtual identification index signalling; or wherein when the
scrambling code identification signalling group comprises the
virtual identification signalling, the virtual identification
enabling signalling and the virtual identification index
signalling, the step of receiving, by a receiver, a scrambling code
identification signalling group and the step of generating, by the
receiver, a corresponding scrambling code sequence of a
demodulation pilot according to the scrambling code identification
signalling group comprise: receiving, by the receiver, the virtual
identification signalling through a System Information Block (SIB)
or a Radio Resource Control (RRC), and receiving, by the receiver,
the virtual identification signalling in the received SIB or RRC;
receiving, by the receiver, an RRC signalling including the virtual
identification enabling signalling to indicate whether the receiver
is a potential virtual identification signalling user, performing
blind detection for received DCI by log.sub.2 N bits when the
receiver is a potential virtual identification user, and performing
blind detection for the DCI by 0 bit when the receiver is not a
potential virtual identification user; obtaining, by the receiver,
the virtual identification index signalling corresponding to the
receiver according to the blind detection, and determining the
virtual identification signalling for generating the scrambling
code sequence of the demodulation pilot according to the
corresponding virtual identification index signalling, wherein N is
the number of virtual cell identifications in the virtual
identification signalling; or wherein when the scrambling code
identification signalling group comprises the virtual
identification signalling and the virtual identification index
signalling, the step of receiving, by a receiver, a scrambling code
identification signalling group and the step of generating, by the
receiver, a corresponding scrambling code sequence of a
demodulation pilot according to the scrambling code identification
signalling group comprise: receiving, by the receiver, the virtual
identification signalling via a System Information Block (SIB) or a
Radio Resource Control (RRC) signalling, and storing, by the
receiver, the virtual identification signalling in the received SIB
or RRC signalling; performing, by the receiver, blind detection for
DCI by 1 bit or log.sub.2 N bits, obtaining the virtual
identification index signalling corresponding to the receiver
according to the blind detection, and determining the virtual
identification signalling for generating the scrambling code
sequence of the demodulation pilot according to the corresponding
virtual identification index signalling.
4. The method according to claim 3, wherein the step of obtaining,
by the receiver, the virtual identification signalling comprises:
calculating, by the receiver, the virtual identification signalling
directly or indirectly through other obtained 1 bit parameters, the
other obtained parameters include a n.sub.SCID parameter in DCI
Format 2B, a n.sub.SCID parameter in DCI Format 2C or a n.sub.SCID
parameter in new DCI.
5-6. (canceled)
7. The method according to claim 2, wherein when the scrambling
code identification signalling group comprises the virtual
identification index signalling, the step of generating, by the
receiver, a corresponding scrambling code sequence of a
demodulation pilot according to the scrambling code identification
signalling group comprises: obtaining, by the receiver, the virtual
identification signalling, performing blind detection for DCI by
log.sub.2 N bits or 1 bit, obtaining the virtual identification
index signalling corresponding to the receiver according to the
blind detection, and determining the virtual identification
signalling for generating the scrambling code sequence of the
demodulation pilot according to the corresponding virtual
identification index signalling; or wherein when the scrambling
code identification signalling group comprises the virtual
identification enabling signalling and the virtual identification
index signalling, the step of generating, by the receiver, a
corresponding scrambling code sequence of a demodulation pilot
according to the scrambling code identification signalling group
comprises: obtaining, by the receiver, the virtual identification
signalling and receiving the obtained virtual identification
signalling; receiving, by the receiver, an RRC signalling including
the virtual identification enabling signalling to indicate whether
the receiver is a potential virtual identification signalling user,
performing blind detection for DCI by 1 bit when the receiver is a
potential virtual identification user, and performing blind
detection for the DCI by 0 bit when the receiver is not a potential
virtual identification user; obtaining, by the receiver, the
virtual identification index signalling corresponding to the
receiver according to the blind detection, and determining the
virtual identification signalling for generating the scrambling
code sequence of the demodulation pilot according to the
corresponding virtual identification index signalling; or wherein
when the scrambling code identification signalling group comprises
the virtual identification enabling signalling and the virtual
identification index signalling, the step of generating, by the
receiver, a corresponding scrambling code sequence of a
demodulation pilot according to the scrambling code identification
signalling group comprises: obtaining, by the receiver, the virtual
identification signalling and storing the obtained virtual
identification signalling; receiving, by the receiver, an RRC
signalling including the virtual identification enabling signalling
to indicate whether the receiver is a potential virtual
identification signalling user, performing blind detection for DCI
by log.sub.2 N bits when the receiver is a potential virtual
identification user, and performing blind detection for the DCI by
0 bit when the receiver is not a potential virtual identification
user; obtaining, by the receiver, the virtual identification index
signalling corresponding to the receiver according to the blind
detection, and determining the virtual identification signalling
for generating the scrambling code sequence of the demodulation
pilot according to the corresponding virtual identification index
signalling.
8-9. (canceled)
10. The method according to claim 7, wherein the step of obtaining,
by the receiver, the virtual identification signalling comprises:
calculating, by the receiver, the virtual identification signalling
directly or indirectly through other obtained parameters, the other
obtained parameters include a n.sub.SCID parameter in DCI Format
2B, a n.sub.SCID parameter in DCI Format 2C or a n.sub.SCID
parameter in new DCI, wherein when calculating by using n.sub.SCID,
the value of N is 1.
11-12. (canceled)
13. A method for notification of scrambling code identification
signalling group, wherein the method comprises: transmitting, by a
network side, a scrambling code identification signalling group to
a receiver, wherein the scrambling code identification signalling
group is configured to enable the receiver to: generate a
corresponding scrambling code sequence of a demodulation pilot, and
generate a pilot symbol sequence according to the scrambling code
sequence of the demodulation pilot, and perform channel estimation
according to the pilot symbol sequence.
14. The method according to claim 13, wherein the scrambling code
identification signalling group comprises a virtual identification
signalling, and/or a virtual identification enabling signalling
and/or a virtual identification index signalling.
15. The method according to claim 14, wherein when the scrambling
code identification signalling group comprises the virtual
identification signalling, the virtual identification enabling
signalling and the virtual identification index signalling, the
step of transmitting, by a network side, a scrambling code
identification signalling group to a receiver for enabling the
receiver to generate a corresponding scrambling code sequence of a
demodulation pilot according to the scrambling code identification
signalling group comprise: transmitting, by the network side, the
virtual identification signalling to the receiver via a System
Information Block (SIB) or a Radio Resource Control (RRC)
signalling; indicating, by the network side, whether the receiver
is a potential virtual identification signalling user through the
virtual identification enabling signalling included in the RRC
signalling, wherein when the receiver is a potential virtual
identification signalling user, a blind detection for Downlink
Control Information (DCI) by 1 bit is performed, and when the
receiver is not a potential virtual identification user, a blind
detection for the DCI by 0 bit is performed; wherein the blind
detection is for enabling the receiver to obtain the virtual
identification index signalling corresponding to the receiver and
determine the virtual identification signalling for generating the
scrambling code sequence of the demodulation pilot according to the
corresponding virtual identification index signalling; or wherein
when the scrambling code identification signalling group comprises
the virtual identification signalling, the virtual identification
enabling signalling and the virtual identification index
signalling, the step of transmitting, by a network side, a
scrambling code identification signalling group to a receiver for
enabling the receiver to generate a corresponding scrambling code
sequence of a demodulation pilot according to the scrambling code
identification signalling group comprise: transmitting, by the
network side, the virtual identification signalling to the receiver
through a System Information Block (SIB) or a Radio Resource
Control (RRC); indicating, by the network side, whether the
receiver is a potential virtual identification signalling user
through the virtual identification enabling signalling included in
an RRC signalling, wherein when the receiver is a potential virtual
identification user, a blind detection for received DCI by
log.sub.2 N bits is performed, and when the receiver is not a
potential virtual identification user, a blind detection for the
DCI by 0 bit is performed; wherein the blind detection is for
enabling the receiver to obtain the virtual identification index
signalling corresponding to the receiver and determine the virtual
identification signalling for generating the scrambling code
sequence of the demodulation pilot according to the corresponding
virtual identification index signalling, wherein N is the number of
virtual cell identifications in the virtual identification
signalling; or wherein when the scrambling code identification
signalling group comprises the virtual identification signalling
and the virtual identification index signalling, the step of
transmitting, by a network side, a scrambling code identification
signalling group to a receiver for enabling the receiver to
generate a corresponding scrambling code sequence of a demodulation
pilot according to the scrambling code identification signalling
group comprise: transmitting, by the network side, the virtual
identification signalling to the receiver via a System Information
Block (SIB) or a Radio Resource Control (RRC) signalling; enabling
the receiver to perform blind detection for DCI by 1 bit or
log.sub.2N bits, wherein the blind detection is for enabling the
receiver to obtain the virtual identification index signalling
corresponding to the receiver, and determine the virtual
identification signalling for generating the scrambling code
sequence of the demodulation pilot according to the corresponding
virtual identification index signalling.
16. The method according to claim 14, wherein when the scrambling
code identification signalling group comprises the virtual
identification index signalling, the step of enabling the receiver
to generate a corresponding scrambling code sequence of a
demodulation pilot according to the scrambling code identification
signalling group comprises: transmitting, by the network side, the
virtual identification signalling, enabling the receiver to perform
blind detection for DCI by log.sub.2 N bits or 1 bit, wherein the
blind detection is for enabling the receiver to obtain the virtual
identification index signalling corresponding to the receiver, and
determine the virtual identification signalling for generating the
scrambling code sequence of the demodulation pilot according to the
corresponding virtual identification index signalling or wherein
when the scrambling code identification signalling group comprises
the virtual identification enabling signalling and the virtual
identification index signalling, the step of enabling the receiver
to generate a corresponding scrambling code sequence of a
demodulation pilot according to the scrambling code identification
signalling group comprises: transmitting, by the network side, the
virtual identification signalling for storing in the receiver;
indicating, by the network side, whether the receiver is a
potential virtual identification signalling user through the
virtual identification enabling signalling included in an RRC
signalling, wherein when the receiver is a potential virtual
identification user, a blind detection for DCI by 1 bit is
performed, and when the receiver is not a potential virtual
identification user, a blind detection for the DCI by 0 bit is
performed; wherein the blind detection is for enabling the receiver
to obtain the virtual identification index signalling corresponding
to the receiver and determine the virtual identification signalling
for generating the scrambling code sequence of the demodulation
pilot according to the corresponding virtual identification index
signalling; or wherein when the scrambling code identification
signalling group comprises the virtual identification enabling
signalling and the virtual identification index signalling, the
step of generating, by the receiver, a corresponding scrambling
code sequence of a demodulation pilot according to the scrambling
code identification signalling group comprises: obtaining, by the
receiver, the virtual identification signalling and storing the
obtained virtual identification signalling; indicating, by the
network side, whether the receiver is a potential virtual
identification signalling user through the virtual identification
enabling signalling included in an RRC signalling, wherein when the
receiver is a potential virtual identification user, a blind
detection for DCI by log.sub.2 N bits is performed, and when the
receiver is not a potential virtual identification user, a blind
detection for the DCI by 0 bit is performed; wherein the blind
detection is for enabling the receiver to obtain the virtual
identification index signalling corresponding to the receiver, and
determine the virtual identification signalling for generating the
scrambling code sequence of the demodulation pilot according to the
corresponding virtual identification index signalling.
17. The method according to claim 16, wherein the step of enabling
the receiver to obtain the virtual identification signalling
comprises: enabling the receiver to calculate the virtual
identification signalling directly or indirectly through other
obtained parameters, the other obtained parameters include a
n.sub.SCID parameter in DCI Format 2B, a n.sub.SCID parameter in
DCI Format 2C or a n.sub.SCID parameter in new DCI, wherein when
calculating by using n.sub.SCID, the value of N is 1.
18. A receiver for notification of scrambling code identification
signalling group, comprising: means for receiving a scrambling code
identification signalling group; means for generating a
corresponding scrambling code sequence of a demodulation pilot
according to the scrambling code identification signalling group;
means for generating a pilot symbol sequence according to the
scrambling code sequence of the demodulation pilot; and means for
performing channel estimation according to the pilot symbol
sequence.
19. The receiver according to claim 18, wherein the scrambling code
identification signalling group comprises a virtual identification
signalling, and/or a virtual identification enabling signalling
and/or a virtual identification index signalling.
20. The receiver according to claim 19, wherein when the scrambling
code identification signalling group comprises the virtual
identification signalling, the virtual identification enabling
signalling and the virtual identification index signalling, means
for receiving a scrambling code identification signalling group and
means for generating a corresponding scrambling code sequence of a
demodulation pilot according to the scrambling code identification
signalling group comprise: means for receiving the virtual
identification signalling via a System Information Block (SIB) or a
Radio Resource Control (RRC) signalling, and receiving, by the
receiver, the virtual identification signalling in the received SIB
or RRC signalling; means for receiving the RRC signalling including
the virtual identification enabling signalling to indicate whether
the receiver is a potential virtual identification signalling user,
performing blind detection for Downlink Control Information (DCI)
by 1 bit when the receiver is a potential virtual identification
signalling user, and performing blind detection for the DCI by 0
bit when the receiver is not a potential virtual identification
user; means for obtaining the virtual identification index
signalling corresponding to the receiver according to the blind
detection, and determining the virtual identification signalling
for generating the scrambling code sequence of the demodulation
pilot according to the corresponding virtual identification index
signalling; or wherein when the scrambling code identification
signalling group comprises the virtual identification signalling,
the virtual identification enabling signalling and the virtual
identification index signalling, means for receiving a scrambling
code identification signalling group and means for generating a
corresponding scrambling code sequence of a demodulation pilot
according to the scrambling code identification signalling group
comprise: means for receiving the virtual identification signalling
through a System Information Block (SIB) or a Radio Resource
Control (RRC), and receiving, by the receiver, the virtual
identification signalling in the received SIB or RRC; means for
receiving an RRC signalling including the virtual identification
enabling signalling to indicate whether the receiver is a potential
virtual identification signalling user, performing blind detection
for received DCI by log.sub.2 N bits when the receiver is a
potential virtual identification user, and performing blind
detection for the DCI by 0 bit when the receiver is not a potential
virtual identification user; means for obtaining the virtual
identification index signalling corresponding to the receiver
according to the blind detection, and determining the virtual
identification signalling for generating the scrambling code
sequence of the demodulation pilot according to the corresponding
virtual identification index signalling, wherein N is the number of
virtual cell identifications in the virtual identification
signalling; or wherein when the scrambling code identification
signalling group comprises the virtual identification signalling
and the virtual identification index signalling, means for
receiving a scrambling code identification signalling group and
means for generating a corresponding scrambling code sequence of a
demodulation pilot according to the scrambling code identification
signalling group comprise: means for receiving the virtual
identification signalling via a System Information Block (SIB) or a
Radio Resource Control (RRC) signalling, and storing, by the
receiver, the virtual identification signalling in the received SIB
or RRC signalling; means for performing blind detection for DCI by
1 bit or log.sub.2 N bits, obtaining the virtual identification
index signalling corresponding to the receiver according to the
blind detection, and determining the virtual identification
signalling for generating the scrambling code sequence of the
demodulation pilot according to the corresponding virtual
identification index signalling.
21. The receiver according to claim 19, wherein when the scrambling
code identification signalling group comprises the virtual
identification index signalling, means for generating a
corresponding scrambling code sequence of a demodulation pilot
according to the scrambling code identification signalling group
comprises: means for obtaining the virtual identification
signalling, performing blind detection for DCI by log.sub.2 N bits
or 1 bit, obtaining the virtual identification index signalling
corresponding to the receiver according to the blind detection, and
determining the virtual identification signalling for generating
the scrambling code sequence of the demodulation pilot according to
the corresponding virtual identification index signalling; or
wherein when the scrambling code identification signalling group
comprises the virtual identification enabling signalling and the
virtual identification index signalling, means for generating a
corresponding scrambling code sequence of a demodulation pilot
according to the scrambling code identification signalling group
comprises: means for obtaining the virtual identification
signalling and receiving the obtained virtual identification
signalling; means for receiving an RRC signalling including the
virtual identification enabling signalling to indicate whether the
receiver is a potential virtual identification signalling user,
performing blind detection for DCI by 1 bit when the receiver is a
potential virtual identification user, and performing blind
detection for the DCI by 0 bit when the receiver is not a potential
virtual identification user; means for obtaining the virtual
identification index signalling corresponding to the receiver
according to the blind detection, and determining the virtual
identification signalling for generating the scrambling code
sequence of the demodulation pilot according to the corresponding
virtual identification index signalling; or wherein when the
scrambling code identification signalling group comprises the
virtual identification enabling signalling and the virtual
identification index signalling, means for generating a
corresponding scrambling code sequence of a demodulation pilot
according to the scrambling code identification signalling group
comprises: means for obtaining the virtual identification
signalling and storing the obtained virtual identification
signalling; means for receiving an RRC signalling including the
virtual identification enabling signalling to indicate whether the
receiver is a potential virtual identification signalling user,
performing blind detection for DCI by log.sub.2 N bits when the
receiver is a potential virtual identification user, and performing
blind detection for the DCI by 0 bit when the receiver is not a
potential virtual identification user; means for obtaining the
virtual identification index signalling corresponding to the
receiver according to the blind detection, and determining the
virtual identification signalling for generating the scrambling
code sequence of the demodulation pilot according to the
corresponding virtual identification index signalling.
22. The receiver according to claim 21, wherein means for obtaining
the virtual identification signalling comprises: means for
calculating the virtual identification signalling directly or
indirectly through other obtained parameters, the other obtained
parameters include a n.sub.SCID parameter in DCI Format 2B, a
n.sub.SCID parameter in DCI Format 2C or a n.sub.SCID parameter in
new DCI, wherein when calculating by using n.sub.SCID, the value of
N is 1.
23. A base station for notification of scrambling code
identification signalling group, comprising: means for transmitting
a scrambling code identification signalling group to a receiver,
wherein the scrambling code identification signalling group is
configured to enable the receiver to: generate a corresponding
scrambling code sequence of a demodulation pilot, and generate a
pilot symbol sequence according to the scrambling code sequence of
the demodulation pilot, and perform channel estimation according to
the pilot symbol sequence.
24. The base station according to claim 23, wherein the scrambling
code identification signalling group comprises a virtual
identification signalling, and/or a virtual identification enabling
signalling and/or a virtual identification index signalling.
25. The base station according to claim 24, wherein when the
scrambling code identification signalling group comprises the
virtual identification signalling, the virtual identification
enabling signalling and the virtual identification index
signalling, means for transmitting a scrambling code identification
signalling group to a receiver for enabling the receiver to
generate a corresponding scrambling code sequence of a demodulation
pilot according to the scrambling code identification signalling
group comprise: means for transmitting the virtual identification
signalling to the receiver via a System Information Block (SIB) or
a Radio Resource Control (RRC) signalling; means for indicating
whether the receiver is a potential virtual identification
signalling user through the virtual identification enabling
signalling included in the RRC signalling, wherein when the
receiver is a potential virtual identification signalling user, a
blind detection for Downlink Control Information (DCI) by 1 bit is
performed, and when the receiver is not a potential virtual
identification user, a blind detection for the DCI by 0 bit is
performed; wherein the blind detection is for enabling the receiver
to obtain the virtual identification index signalling corresponding
to the receiver and determine the virtual identification signalling
for generating the scrambling code sequence of the demodulation
pilot according to the corresponding virtual identification index
signalling; or wherein when the scrambling code identification
signalling group comprises the virtual identification signalling,
the virtual identification enabling signalling and the virtual
identification index signalling, means for transmitting a
scrambling code identification signalling group to a receiver for
enabling the receiver to generate a corresponding scrambling code
sequence of a demodulation pilot according to the scrambling code
identification signalling group comprise: means for transmitting
the virtual identification signalling to the receiver through a
System Information Block (SIB) or a Radio Resource Control (RRC);
means for indicating whether the receiver is a potential virtual
identification signalling user through the virtual identification
enabling signalling included in an RRC signalling, wherein when the
receiver is a potential virtual identification user, a blind
detection for received DCI by log.sub.2 N bits is performed, and
when the receiver is not a potential virtual identification user, a
blind detection for the DCI by 0 bit is performed; wherein the
blind detection is for enabling the receiver to obtain the virtual
identification index signalling corresponding to the receiver and
determine the virtual identification signalling for generating the
scrambling code sequence of the demodulation pilot according to the
corresponding virtual identification index signalling, wherein N is
the number of virtual cell identifications in the virtual
identification signalling; or wherein when the scrambling code
identification signalling group comprises the virtual
identification signalling and the virtual identification index
signalling, means for transmitting a scrambling code identification
signalling group to a receiver for enabling the receiver to
generate a corresponding scrambling code sequence of a demodulation
pilot according to the scrambling code identification signalling
group comprise: means for transmitting the virtual identification
signalling to the receiver via a System Information Block (SIB) or
a Radio Resource Control (RRC) signalling; means for enabling the
receiver to perform blind detection for DCI by 1 bit or log.sub.2 N
bits, wherein the blind detection is for enabling the receiver to
obtain the virtual identification index signalling corresponding to
the receiver, and determine the virtual identification signalling
for generating the scrambling code sequence of the demodulation
pilot according to the corresponding virtual identification index
signalling.
26. The base station according to claim 24, wherein when the
scrambling code identification signalling group comprises the
virtual identification index signalling, means for enabling the
receiver to generate a corresponding scrambling code sequence of a
demodulation pilot according to the scrambling code identification
signalling group comprises: means for transmitting the virtual
identification signalling, enabling the receiver to perform blind
detection for DCI by log.sub.2 N bits or 1 bit, wherein the blind
detection is for enabling the receiver to obtain the virtual
identification index signalling corresponding to the receiver, and
determine the virtual identification signalling for generating the
scrambling code sequence of the demodulation pilot according to the
corresponding virtual identification index signalling; or wherein
when the scrambling code identification signalling group comprises
the virtual identification enabling signalling and the virtual
identification index signalling, means for enabling the receiver to
generate a corresponding scrambling code sequence of a demodulation
pilot according to the scrambling code identification signalling
group comprises: means for transmitting the virtual identification
signalling for storing in the receiver; means for indicating
whether the receiver is a potential virtual identification
signalling user through the virtual identification enabling
signalling included in an RRC signalling, wherein when the receiver
is a potential virtual identification user, a blind detection for
DCI by 1 bit is performed, and when the receiver is not a potential
virtual identification user, a blind detection for the DCI by 0 bit
is performed; wherein the blind detection is for enabling the
receiver to obtain the virtual identification index signalling
corresponding to the receiver and determine the virtual
identification signalling for generating the scrambling code
sequence of the demodulation pilot according to the corresponding
virtual identification index signalling; or wherein when the
scrambling code identification signalling group comprises the
virtual identification enabling signalling and the virtual
identification index signalling, means for generating a
corresponding scrambling code sequence of a demodulation pilot
according to the scrambling code identification signalling group
comprises: means for obtaining the virtual identification
signalling and storing the obtained virtual identification
signalling; means for indicating whether the receiver is a
potential virtual identification signalling user through the
virtual identification enabling signalling included in an RRC
signalling, wherein when the receiver is a potential virtual
identification user, a blind detection for DCI by log.sub.2 N bits
is performed, and when the receiver is not a potential virtual
identification user, a blind detection for the DCI by 0 bit is
performed; wherein the blind detection is for enabling the receiver
to obtain the virtual identification index signalling corresponding
to the receiver, and determine the virtual identification
signalling for generating the scrambling code sequence of the
demodulation pilot according to the corresponding virtual
identification index signalling.
27. The base station according to claim 26, wherein means for
enabling the receiver to obtain the virtual identification
signalling comprises: Means for enabling the receiver to calculate
the virtual identification signalling directly or indirectly
through other obtained parameters, the other obtained parameters
include a n.sub.SCID parameter in DCI Format 2B, a n.sub.SCID
parameter in DCI Format 2C or a n.sub.SCID parameter in new DCI,
wherein when calculating by using n.sub.SCID, the value of N is
1.
28. The method according to claim 15, wherein the step of
transmitting, by the network side, the virtual identification
signalling comprises: transmitting other 1 bit parameters including
a n.sub.SCID parameter in DCI Format 2B, a n.sub.SCID parameter in
DCI Format 2C or a n.sub.SCID parameter in new DCI to directly or
indirectly indicate the virtual identification signalling to
receiver.
29. The receiver according to claim 20, wherein the receiver is
configured to calculate the virtual identification signalling
directly or indirectly through other obtained 1 bit parameters, the
other obtained parameters include a n.sub.SCID parameter in DCI
Format 2B, a n.sub.SCID parameter in DCI Format 2C or a n.sub.SCID
parameter in new DCI.
30. The base station according to claim 25, wherein means for
transmitting the virtual identification signalling comprises: means
for transmitting other 1 bit parameters including a n.sub.SCID
parameter in DCI Format 2B, a n.sub.SCID parameter in DCI Format 2C
or a n.sub.SCID parameter in new DCI to directly or indirectly
indicate the virtual identification signalling to receiver.
31. A receiver for notification of scrambling code identification
signalling group, configured to: receive a scrambling code
identification signalling group; generate a corresponding
scrambling code sequence of a demodulation pilot according to the
scrambling code identification signalling group; generate a pilot
symbol sequence according to the scrambling code sequence of the
demodulation pilot; and perform channel estimation according to the
pilot symbol sequence.
32. A base station for notification of scrambling code
identification signalling group, configured to: transmit a
scrambling code identification signalling group to a receiver,
wherein the scrambling code identification signalling group is
configured to enable the receiver to: generate a corresponding
scrambling code sequence of a demodulation pilot, and generate a
pilot symbol sequence according to the scrambling code sequence of
the demodulation pilot, and perform channel estimation according to
the pilot symbol sequence.
33. The receiver according to claim 18, wherein the receiver
comprises a mobile terminal, a handset, a relay station or a
HeNodeB.
34. The receiver according to claim 31, wherein the receiver
comprises a mobile terminal, a handset, a relay station or a
HeNodeB.
Description
TECHNICAL FIELD
[0001] The present disclosure relates to a Long Term Evolution
Advanced (LTE-advanced) system and in particular to method and
system for notification of scrambling code identification
signalling group.
BACKGROUND
[0002] In an LTE system, in order to measure the quality of a
channel and demodulate the received data symbols, a Common
Reference Signal (CRS) is designed. A receiver may measure the
quality of the channel by using the CRS, so as to determine whether
the receiver will perform cell reselection and switch to a target
cell, and the channel quality is measured when the receiver is in a
connected state. When the interference level is relatively high,
the physical layer of the receiver may disconnect from the network
side through a wireless link connection failure signalling related
to a higher layer. Two pilots including a Demodulation Reference
Signal (DMRS) and a Channel State Information Reference Signal
(CSI-RS) are introduced into LTE Release 10. The receiver
demodulates data by using the DMRS and measures the quality of the
channel by using the CSI-RS, so as to feed back information
including a Pre-coding Matrix Indicator (PMI)/a Channel Quality
Indicator (CQI)/a Rank Indicator (RI) etc. to the network side. An
advantage of such a configuration is that the overhead of the
channel state reference signal can be reduced while improving the
accuracy of channel estimation. Another advantage of the DMRS is
that transparent detection of the receiver can be realized, i.e.
the receiver does not need to know the pre-coding weight applied to
Evolved Node B (eNodeB) transmission. Interlayer interference can
be estimated by using the DMRS, especially for Transmission Mode 9
applied by a receiver of Release 10, so as to use an advanced
receiver to reduce detection errors caused by the interlayer
interference.
[0003] In the development of future communication technology, it is
necessary to realize cell "miniaturization", i.e. in future
scenarios, not only uniformly-distributed macro-eNodeBs, but also
micro cells that are distributed in a non-uniform manner (for
example, Picos, HeNodeB and relays) are required to be considered.
In a distribution scenario of such micro cells distributed in a
non-uniform manner, not only interference between macro-eNodeBs but
also interference between a macro-eNodeB and a micro base station
(for example, a Pico, a HeNodeB and a relay) exists. Since the
transmission power of a macro-eNodeB is relatively high,
interference in such a heterogeneous network is even serious, and
thus it will become an important aspect of LTE Release 11 to
research technologies for avoiding/eliminating interference among
cells. Multiple-Input and Multiple-Output (MIMO) enhancement of R10
is also mainly based on enhancement of a single cell.
[0004] However, when considering a scenario of the heterogeneous
network, it only considers avoiding interference among a plurality
of cells through a simple time-division method. In LTE Release 11,
Coordinated Multi-Point (COMP) transmission technology may be
introduced to avoid interference among cells, especially
interference among a plurality of cells in the heterogeneous
network.
[0005] Coordinated Multi-Point COMP technology avoids interference
among a plurality of cells through beam-space division technology.
Currently, major techniques of COMP may be divided into: COMP joint
transmission and COMP cooperative scheduling/COMP cooperative beam.
When COMP joint transmission is used, different coordinated cells
participating in COMP joint transmission need to apply the same
scrambling code sequence to scramble the transmitted data and
DMRSs, a receiver will fail to combine signals transmitted by a
plurality of cells and obtain a combined diversity gain if
different cells participating in coordination apply different
scrambling code sequences. In addition, when a COMP beam method is
applied to reduce interference among receivers of different cells,
if different cells use different DMRS scrambling codes, then the
receivers of different cells can hardly estimate the interference
between the receivers accurately through DMRSs, so that the
interference cannot be compressed by an advanced receiving
technology, or reference signals and data scrambling code sequences
of different transmitting sides cannot be notified dynamically to
receivers during Dynamic Cell Selection (DCS).
SUMMARY
[0006] Therefore, the present disclosure provides method and system
for notification of scrambling code identification signalling
group. According to a scrambling code identification signalling
group transmitted from a network side, a receiver can obtain a
scrambling code sequence of a demodulation pilot which is the same
as that of the network side, and thus the interference can be
avoided.
[0007] The technical solution of the present disclosure is realized
in the following way:
the present disclosure provides a method for notification of
scrambling code identification signalling group, the method
includes: a network side transmits a scrambling code identification
signalling group to a receiver; the receiver generates a
corresponding scrambling code sequence of a demodulation pilot
according to the scrambling code identification signalling group,
generates a pilot symbol sequence according to the scrambling code
sequence of the demodulation pilot, and performs channel estimation
according to the pilot symbol sequence.
[0008] In the method above,
the scrambling code identification signalling group may include a
virtual identification signalling, and/or a virtual identification
enabling signalling and/or a virtual identification index
signalling.
[0009] In the method above, when the scrambling code identification
signalling group includes the virtual identification signalling,
the virtual identification enabling signalling and the virtual
identification index signalling, the step that the network side
transmits the scrambling code identification signalling group to
the receiver, and the receiver generates the corresponding
scrambling code sequence of the demodulation pilot according to the
scrambling code identification signalling group may include:
the network side transmits the virtual identification signalling to
the receiver via a System Information Block (SIB) or a Radio
Resource Control (RRC) signalling, and the receiver stores the
virtual identification signalling in the received SIB or RRC
signalling; the network side indicates, through the RRC signalling,
whether the receiver is a potential virtual identification
signalling user, performs blind detection for Downlink Control
Information (DCI) by adding 1 bit when the receiver is a potential
virtual identification user, and performs blind detection for the
DCI by adding 0 bit when the receiver is not a potential virtual
identification user; the receiver determines the virtual
identification signalling according to the virtual identification
index signalling obtained through the blind detection, and
generates the scrambling code sequence of the DMRS according to the
virtual identification signalling.
[0010] In the method above, when the scrambling code identification
signalling group includes the virtual identification signalling,
the virtual identification enabling signalling and the virtual
identification index signalling, the step that the network side
transmits the scrambling code identification signalling group to
the receiver, and the receiver generates, according to the
scrambling code identification signalling group, the corresponding
scrambling code sequence of the DMRS may include:
the network side transmits the virtual identification signalling to
the receiver through an SIB or RRC, and the receiver stores the
virtual identification signalling in the received SIB or RRC; the
network side indicates, through the RRC signalling, whether the
receiver is a potential virtual identification signalling user,
performs blind detection for received DCI by adding log.sub.2 N
bits when the receiver is a potential virtual identification user,
and performs blind detection for the DCI by adding 0 bit when the
receiver is not a potential virtual identification user; the
receiver determines the virtual identification signalling according
to the virtual identification index signalling obtained through the
blind detection, and generates the scrambling code sequence of the
demodulation pilot according to the virtual identification
signalling, wherein N is the number of virtual cell identifications
in the virtual identification signalling.
[0011] In the method above, when the scrambling code identification
signalling group includes the virtual identification signalling and
the virtual identification index signalling, the step that the
network side transmits the scrambling code identification
signalling group to the receiver, and the receiver generates,
according to the scrambling code identification signalling group,
the corresponding scrambling code sequence of the DMRS may
include:
the network side transmits the virtual identification signalling to
the receiver via an SIB or an RRC signalling, and the receiver
stores the virtual identification signalling in the received SIB or
RRC signalling; the receiver performs blind detection for DCI by
adding 1 bit or log.sub.2 N bits, determines the virtual
identification signalling according to the virtual identification
index signalling obtained through the blind detection, and
generates, the scrambling code sequence of the demodulation pilot
according to the virtual identification signalling.
[0012] In the method above, the SIB may be SIB2, SIB3, SIB4, SIB5,
SIB13 or SIB14.
[0013] In the method above, when the scrambling code identification
signalling group includes the virtual identification index
signalling, the step that the terminal side generates the
corresponding scrambling code sequence of the demodulation pilot
according to the scrambling code identification signalling group
includes:
the receiver obtains the virtual identification signalling,
performs blind detection for DCI by adding log.sub.2 N bits or 1
bit, determines the virtual identification signalling according to
the virtual identification index signalling obtained through the
blind detection, and generates the scrambling code sequence of the
demodulation pilot according to the virtual identification
signalling.
[0014] In the method above, when the scrambling code identification
signalling group includes the virtual identification enabling
signalling and the virtual identification index signalling, the
step that the network side transmits the scrambling code
identification signalling group to the receiver, and the receiver
generates the corresponding scrambling code sequence of the
demodulation pilot according to the scrambling code identification
signalling group may include:
the receiver obtains the virtual identification signalling and
stores the obtained virtual identification signalling; the network
side indicates, through an RRC signalling, whether the receiver is
a potential virtual identification signalling user, performs blind
detection for DCI by adding 1 bit when the receiver is a potential
virtual identification user, and performs blind detection for the
DCI by adding 0 bit when the receiver is not a potential virtual
identification user; the receiver determines the virtual
identification signalling according to the virtual identification
index signalling obtained through the blind detection, and
generates the scrambling code sequence of the DMRS according to the
virtual identification signalling.
[0015] In the method above, when the scrambling code identification
signalling group includes the virtual identification enabling
signalling and the virtual identification index signalling, the
step that the terminal side generates the corresponding scrambling
code sequence of the demodulation pilot according to the scrambling
code identification signalling group may include:
the receiver obtains the virtual identification signalling and
stores the obtained virtual identification signalling; the network
side indicates whether the receiver is a potential virtual
identification signalling user through an RRC signalling, performs
blind detection for DCI by adding log.sub.2 N bits when the
receiver is a potential virtual identification user, and performs
blind detection for the DCI by adding 0 bit when the receiver is
not a potential virtual identification user; the receiver
determines the virtual identification signalling according to the
virtual identification index signalling obtained through the blind
detection, and generates the scrambling code sequence of the DMRS
according to the virtual identification signalling.
[0016] In the method above, the step that the receiver obtains the
virtual identification signal may include:
the receiver calculates the virtual identification signalling
directly or indirectly through other obtained parameters; the other
obtained parameters include a n.sub.SCID parameter in DCI Format
2B, a n.sub.SCID parameter in DCI Format 2C or a n.sub.SCID
parameter in new DCI, wherein when calculating by using n.sub.SCID,
the value of N is 1.
[0017] The disclosure further provides a system for notification of
scrambling code identification signalling group. The system
includes: a network side, and a receiver, wherein
the network side is configured to transmit a scrambling code
identification signalling group to the receiver; the receiver is
configured to generate, according to the scrambling code
identification signalling group, a corresponding scrambling code
sequence of a demodulation pilot, generate a pilot symbol sequence
according to the scrambling code sequence of the demodulation
pilot, and perform channel estimation according to the pilot symbol
sequence.
[0018] In the system above, the scrambling code identification
signalling group may include a virtual identification signalling,
and/or a virtual identification enabling signalling and/or a
virtual identification index signalling.
[0019] According to a method and system for notification of
scrambling code identification signalling group of the disclosure,
a network side transmits a scrambling code identification
signalling group to a receiver; the receiver generates a
corresponding scrambling code sequence of a demodulation pilot
according to the scrambling code identification signalling group,
generates a pilot symbol sequence according to the scrambling code
sequence of the demodulation pilot, and performs channel estimation
according to the pilot symbol sequence. Therefore, the receiver can
receive a virtual identification signalling sent by the network
side, and generate the corresponding scrambling code sequence of
the demodulation pilot according to the virtual identification
signalling, so that the receiver obtains the scrambling code
sequence of the DMRS which is the same as that of the network side,
thus avoiding the problem that the receiver fails to estimate
interference among receivers through DMRSs accurately because a
plurality of cells of the network side use different virtual
identification signallings.
BRIEF DESCRIPTION OF THE DRAWINGS
[0020] FIG. 1 is a flowchart for implementing a method for
notification of scrambling code identification signalling group
according to the present disclosure;
[0021] FIG. 2 is a flowchart of the first embodiment for
implementing a method for notification of scrambling code
identification signalling group according to the present
disclosure;
[0022] FIG. 3 is a flowchart of the second embodiment for
implementing a method for notification of scrambling code
identification signalling group according to the present
disclosure;
[0023] FIG. 4 is a flowchart of the third embodiment for
implementing a method for notification of scrambling code
identification signalling group according to the present
disclosure;
[0024] FIG. 5 is a flowchart of the fourth embodiment for
implementing a method for notification of scrambling code
identification signalling group according to the present
disclosure;
[0025] FIG. 6 is a flowchart of the fifth embodiment for
implementing a method for notification of scrambling code
identification signalling group according to the present
disclosure;
[0026] FIG. 7 is a flowchart of the sixth embodiment for
implementing a method for notification of scrambling code
identification signalling group according to the present
disclosure;
[0027] FIG. 8 is a flowchart of the seventh embodiment for
implementing a method for notification of scrambling code
identification signalling group according to the present
disclosure;
[0028] FIG. 9 is a flowchart of the eighth embodiment for
implementing a method for notification of scrambling code
identification signalling group according to the present
disclosure;
[0029] FIG. 10 is a flowchart of the ninth embodiment for
implementing a method for notification of scrambling code
identification signalling group according to the present
disclosure;
[0030] FIG. 11 is a flowchart of the tenth embodiment for
implementing a method for notification of scrambling code
identification signalling group according to the present
disclosure; and
[0031] FIG. 12 is a structural diagram for implementing a system
for notification of scrambling code identification signalling group
according to the present disclosure.
DETAILED DESCRIPTION
[0032] A network side includes a macro base station, a micro base
station, a relay base station and a HeNodeB etc. A receiver
includes a mobile terminal, a user handheld device, a relay base
station and a HeNodeB etc. Based on the above network side and the
receiver, the present disclosure provides a method for notification
of scrambling code identification signalling group, and the basic
idea of the method is that: the network side transmits a scrambling
code identification signalling group to the receiver; the receiver
generates a corresponding scrambling code sequence of a
demodulation pilot according to the scrambling code identification
signalling group, generates a pilot symbol sequence according to
the scrambling code sequence of the demodulation pilot, and
performs channel estimation according to the pilot symbol
sequence.
[0033] The present disclosure will be further described in details
below through the accompanying drawings and specific
embodiments.
[0034] FIG. 1 is a flowchart for implementing a method for
notification of scrambling code identification signalling group
according to the present disclosure. As shown in FIG. 1, the method
includes the following steps:
[0035] Step 101: a network side transmits a scrambling code
identification signalling group to a receiver;
specifically, the network side transmits the scrambling code
identification signalling group to the receiver. The scrambling
code identification signalling group includes a virtual
identification signalling, and/or a virtual identification enabling
signalling and/or a virtual identification index signalling,
wherein in the present disclosure, the virtual identification
signalling includes a virtual cell identification and/or a
receiver-dedicated virtual sequence identification signalling. The
network side will transmit the scrambling code identification
signalling group to the receiver via a System Information Block
(SIB) or a Radio Resource Control (RRC) signalling, wherein the SIB
may use SIB2, SIB3, SIB4, SIB5, SIB13 or SIB14; the virtual
identification signalling is a constant fixedly used in a standard,
or a value identification calculated through other known
parameters.
[0036] Step 102: the receiver generates a corresponding scrambling
code sequence of a demodulation pilot according to the scrambling
code identification signalling group, generates a pilot symbol
sequence according to the generated scrambling code sequence, and
performs channel estimation according to the pilot symbol
sequence.
specifically, when the virtual identification enabling signalling
is received, the receiver performs blind detection for the virtual
identification signalling through the virtual identification index
signalling according to the virtual identification enabling
signalling, determines whether the virtual identification
signalling or a serving cell identification is used, generates the
scrambling code sequence of the demodulation reference signal
and/or demodulation pilot according to the virtual identification
signalling or the serving cell identification signalling, generates
the pilot symbol sequence according to the generated scrambling
code sequence, and performs channel estimation according to the
pilot symbol sequence.
Embodiment 1
[0037] FIG. 2 is a flowchart of the first embodiment for
implementing a method for notification of scrambling code
identification signalling group according to the present
disclosure. As shown in FIG. 2, the embodiment includes the
following steps:
[0038] Step 201: a network side transmits a virtual identification
signalling to a receiver through an SIB;
specifically, the network side transmits, through the SIB, the
virtual identification signalling to a receiver which is able to
identify such a signalling, wherein the virtual identification
signalling may include a virtual cell identification and the
virtual identification signalling may include one or more virtual
cell identifications. In the present embodiment, the SIB may be
SIB2, SIB3, SIB4, SIB5, SIB13 or SIB14.
[0039] Step 202: the receiver stores the virtual identification
signalling in the received SIB;
specifically, the receiver receives, on a corresponding sub-frame,
the virtual identification signalling sent by the network side
through the SIB; the physical layer of the receiver performs a
series of processing for the virtual identification signalling, and
the processed and decoded virtual identification signalling is
transmitted to a higher layer of the receiver finally; meanwhile,
the receiver may obtain the virtual identification signalling from
the SIB, store the virtual identification signalling and update the
virtual identification signalling according to an updating period
of the SIB; the receiver storing the virtual identification
signalling becomes a possible receiver which generates, according
to the virtual identification signalling, a scrambling code
sequence of a demodulation pilot.
[0040] Step 203: the network side indicates whether the receiver is
a potential virtual identification signalling user through an RRC
signalling;
specifically, when the receiver satisfies a certain condition, the
network side determines whether the receiver needs to become a
potential virtual identification signalling user according to a
channel environment where the receiver is located, and notifies,
through the RRC signalling, a determining result to notify whether
the receiver needs to become a potential virtual identification
signalling user; when the RRC signalling carries a virtual
identification enabling signalling, the receiver can learn the
determining result through identifying an identification of the
virtual identification enabling signalling; in the present
embodiment, the virtual identification enabling signalling in the
RRC signalling is 1 bit, and a value represented by the 1 bit is 0,
1, Enable or Disable enumeration; for example, the certain
condition may be a reference signal receiving power, i.e. when the
reference signal receiving power of the receiver satisfies a set
threshold, the network side determines whether the receiver needs
to become a potential virtual identification signalling user
according to the channel environment where the receiver is
located;
[0041] Step 204: when the receiver is a potential virtual
identification user, perform blind detection for DCI by adding 1
bit; when the receiver is not a potential virtual identification
user, perform blind detection for the DCI by adding 0 bit;
specifically, the receiver receives DownLink Control Information
(DCI) transmitted by the network side. The DCI includes a virtual
identification index signalling. In the present embodiment, the
receiver determines, according to the virtual identification
enabling signalling, to perform blind detection for the DCI by
adding a 1-bit extension length or according to a normal length,
i.e. in a format of DCI Format 2B or DCI Format 2C or a future
format of the DCI, the virtual identification signalling is
increased by 0 bit or 1 bit; wherein when the value of the virtual
identification enabling signalling is 0 or Disable, the receiver is
not a potential virtual identification user and blind detection is
performed for the DCI by adding 0 bit, i.e. the blind detection is
performed for the DCI according to a normal length; when the value
of the virtual identification enabling signalling is 1 or Enable,
the receiver is a potential virtual identification user and the
receiver performs blind detection for the DCI by adding a 1-bit
extension length.
[0042] Step 205: the receiver determines the virtual identification
signalling according to the virtual identification index signalling
obtained through blind detection, generates a scrambling code
sequence of a demodulation pilot according to the virtual
identification signalling, generates a pilot symbol sequence
according to the generated scrambling code sequence, and performs
channel estimation according to the pilot symbol sequence;
specifically, when the receiver detects that the length of the DCI
after blind detection is a normal length, the receiver generates
the scrambling code sequence of the demodulation pilot according to
a serving cell identification, wherein an initial factor of the
generated scrambling code sequence of the demodulation pilot is:
c.sub.init=(n.sub.s/2+1)(2N.sub.ID.sup.cell+1)2.sup.16+n.sub.SCID,
where n.sub.s is a time slot index in a wireless frame and a range
of values is: n.sub.s={0, 1, 2, 3 . . . , 19}, N.sub.ID.sup.cell is
a notified serving cell identification, and n.sub.SCID is a
receiver identification-related parameter; the pilot symbol
sequence is generated according to a scrambling code sequence
generating method, and a pilot sequence generating method in the
3rd Generation Partnership Project (3GPP) RAN1 36.211 protocol; a
received signal is demodulated, i.e. the channel estimation is
performed by using the generated pilot symbol sequence and the
received signal. The received signal is a demodulation reference
signal; or when the receiver detects that the length of the DCI
after blind detection is an extension length, the receiver
generates the scrambling code sequence of the demodulation pilot
according to the virtual identification signalling, wherein an
initial factor of the generated scrambling code sequence of the
demodulation pilot is:
c.sub.init=(n.sub.s/2+1)(2N.sub.ID.sup.virtual+1)2.sup.16+n.sub.SCID,
where n.sub.s is a time slot index in a wireless frame and a range
of values is n.sub.s={0, 1, 2, 3 . . . , 19}, N.sub.ID.sup.virtual
is the virtual identification signalling stored by the receiver,
and n.sub.SCID is a receiver identification-related parameter; the
pilot symbol sequence is generated according to a scrambling code
sequence generating method, and a pilot sequence generating method
in the 3GPP RAN1 36.211 protocol; a received signal is demodulated,
i.e. the channel estimation is performed by using the generated
pilot symbol sequence and the received signal. The received signal
is a demodulation reference signal.
Embodiment 2
[0043] FIG. 3 is a flowchart of the second embodiment for
implementing a method for notification of scrambling code
identification signalling group according to the present
disclosure. As shown in FIG. 3, the present embodiment includes the
following steps:
[0044] Step 301 to Step 303 are the same as Step 201 to Step
203;
[0045] Step 304: when the receiver is a potential virtual
identification user, perform blind detection for DCI by adding
log.sub.2 N bits; when the receiver is not a potential virtual
identification, perform blind detection for the DCI by adding 0
bit;
specifically, the receiver receives DCI transmitted by the network
side. The DCI includes a virtual identification index signalling.
In the present embodiment, the receiver determines, according to
the virtual identification enabling signalling, to perform blind
detection for the DCI by adding a log.sub.2 N-bit extension length
or according to a normal length, i.e. in a format of DCI Format 2B
or DCI Format 2C or a future format of the DCI, the virtual
identification index signalling is increased by 0 bit or log.sub.2N
bits, where N is the number of virtual cell identifications in the
virtual identification signalling, wherein when the value of the
virtual identification enabling signalling is 0 or Disable, the
receiver is not a potential virtual identification user and blind
detection is performed for the DCI by adding 0 bit, i.e. the blind
detection is performed for the DCI according to a normal length;
when the value of the virtual identification enabling signalling is
1 or Enable, the receiver is a potential virtual identification
user and the receiver performs blind detection for the DCI by
adding a log.sub.2 N-bit extension length.
[0046] Step 305: the receiver determines the virtual identification
signalling according to the virtual identification index signalling
obtained through blind detection, generates a scrambling code
sequence of a demodulation pilot according to the virtual
identification signalling, generates a pilot symbol sequence
according to the generated scrambling code sequence, and performs
channel estimation according to the pilot symbol sequence;
specifically, when the receiver detects that the length of the DCI
after blind detection is a normal length, the receiver generates
the scrambling code sequence of the demodulation pilot according to
a serving cell identification, wherein an initial factor of the
generated scrambling code sequence of the demodulation pilot is:
c.sub.init=(n.sub.s/2+1)(2N.sub.ID.sup.cell+1)2.sup.16+n.sub.SCID,
where n.sub.s is a time slot index in a wireless frame and a range
of values is: n.sub.s={0, 1, 2, 3 . . . , 19}, N.sub.ID.sup.cell is
a notified serving cell identification, and n.sub.SCID is a
receiver identification-related parameter; the pilot symbol
sequence is generated according to a scrambling code sequence
generating method, and a pilot sequence generating method in the
3GPP RAN1 36.211 protocol; a received signal is demodulated, i.e.
the channel estimation is performed by using the generated pilot
symbol sequence and the received signal. The received signal is a
demodulation reference signal; or when the receiver detects that
the length of the DCI after blind detection is an extension length,
the receiver generates the scrambling code sequence of the
demodulation pilot according to the virtual identification
signalling, wherein an initial factor of the generated scrambling
code sequence of the demodulation pilot is:
c.sub.init=(n.sub.s/2+1)(2N.sub.ID.sup.virtual+1)2.sup.16+n.sub.SCID,
where n.sub.s is a time slot index in a wireless frame and a range
of values is n.sub.s={0, 1, 2, 3 . . . , 19}, N.sub.ID.sup.virtual
is the virtual identification signalling stored by the receiver,
and n.sub.SCID is a receiver identification-related parameter; the
pilot symbol sequence is generated according to a scrambling code
sequence generating method, and a pilot sequence generating method
in the 3GPP RAN1 36.211 protocol; a received signal is demodulated,
i.e. the channel estimation is performed by using the generated
pilot symbol sequence and the received signal. The received signal
is a demodulation reference signal.
Embodiment 3
[0047] FIG. 4 is a flowchart of the third embodiment for
implementing a method for notification of scrambling code
identification signalling group according to the present
disclosure. As shown in FIG. 4, the present embodiment includes the
following steps:
[0048] Step 401: a network side transmits a virtual identification
signalling to a receiver through an RRC signalling;
specifically, the network side transmits, through the RRC
signalling, the virtual identification signalling to a receiver
which is able to identify such a signalling, wherein the virtual
identification signalling may include a virtual cell identification
and the virtual identification signalling may include one or more
virtual cell identifications;
[0049] Step 402: the receiver stores the virtual identification
signalling in the received RRC;
specifically, the receiver receives, on a corresponding sub-frame,
the virtual identification signalling sent by the network side
through the RRC signalling; the physical layer of the receiver
performs a series of processing for the virtual identification
signalling, and the processed and decoded virtual identification
signalling is transmitted to a higher layer of the receiver
finally; meanwhile, the receiver may obtain the virtual
identification signalling from the RRC signalling, and store the
virtual identification signalling; the receiver storing the virtual
identification signalling becomes a possible receiver which
generates a scrambling code sequence of a demodulation pilot
according to the virtual identification signalling.
[0050] Step 403 to Step 405 are the same as Step 203 to Step
205.
Embodiment 4
[0051] FIG. 5 is a flowchart of the fourth embodiment for
implementing a method for notification of scrambling code
identification signalling group according to the present
disclosure. As shown in FIG. 5, the present embodiment includes the
following steps:
[0052] Step 501: a network side transmits a virtual identification
signalling to a receiver through an RRC signalling;
specifically, the network side transmits, through the RRC
signalling, the virtual identification signalling to a receiver
which is able to identify such a signalling, wherein the virtual
identification signalling may include a virtual cell identification
and the virtual identification signalling may include one or more
virtual cell identifications;
[0053] Step 502: the receiver stores the virtual identification
signalling in the received RRC signalling;
specifically, the receiver receives, on a corresponding sub-frame,
the virtual identification signalling sent by the network side
through the RRC signalling; the physical layer of the receiver
performs a series of processing for the virtual identification
signalling, and the processed and decoded virtual identification
signalling is transmitted to a higher layer of the receiver
finally; meanwhile, the receiver may obtain the virtual
identification signalling from the RRC signalling, and store the
virtual identification signalling; the receiver storing the virtual
identification signalling becomes a possible receiver which
generates a scrambling code sequence of a demodulation pilot
according to the virtual identification signalling;
[0054] Step 503: the network side indicates, through the RRC
signalling, whether the receiver is a potential virtual
identification signalling user;
specifically, when the receiver satisfies a certain condition, the
network side determines whether the receiver needs to become a
potential virtual identification signalling user according to a
channel environment where the receiver is located, and notifies,
through the RRC signalling, a determining result to notify whether
the receiver needs to become a potential virtual identification
signalling use; when the RRC signalling carries a virtual
identification enabling signalling, the receiver can learn the
determining result through identifying an identification of the
virtual identification enabling signalling; in the present
embodiment, the virtual identification enabling signalling in the
RRC signalling is 1 bit, and a value represented by the 1 bit is 0,
1, Enable or Disable enumeration; for example, the certain
condition may be a reference signal receiving power, i.e. when the
reference signal receiving power of the receiver satisfies a set
threshold, the network side determines whether the receiver needs
to become a potential virtual identification signalling user
according to the channel environment where the receiver is
located;
[0055] Step 504: when the receiver is a potential virtual
identification user, perform blind detection for DCI by adding
log.sub.2 N bits; when the receiver is not a potential virtual
identification user, perform blind detection for the DCI by adding
0 bit;
specifically, the receiver receives DCI transmitted by the network
side. The DCI includes a virtual identification index signalling.
In the present embodiment, the receiver determines, according to
the virtual identification enabling signalling, to perform blind
detection for the DCI by adding a log.sub.2 N-bit extension length
or according to a normal length, i.e. in a format of DCI Format 2B
or DCI Format 2C or a future format of the DCI, the virtual
identification signalling is increased by 0 bit or log.sub.2 N
bits, where N is the number of virtual cell identifications in the
virtual identification signalling; wherein when the value of the
virtual identification enabling signalling is 0 or Disable, the
receiver is not a potential virtual identification user and blind
detection is performed for the DCI by adding 0 bit, i.e. the
receiver performs the blind detection for the DCI according to a
normal length; when the value of the virtual identification
enabling signalling is 1 or Enable, the receiver is a potential
virtual identification user and the receiver performs blind
detection for the DCI by adding a log.sub.2 N-bit extension
length.
[0056] Step 505: the receiver determines the virtual identification
signalling according to the virtual identification index signalling
obtained through blind detection, generates a scrambling code
sequence of a demodulation pilot according to the virtual
identification signalling, generates a pilot symbol sequence
according to the generated scrambling code sequence, and performs
channel estimation according to the pilot symbol sequence;
specifically, when the receiver detects that the length of the DCI
after blind detection is a normal length, the receiver generates
the scrambling code sequence of the DMRS according to a serving
cell identification, wherein an initial factor of the generated
scrambling code sequence of the demodulation pilot is:
c.sub.init=(n.sub.s/2+1)(2N.sub.ID.sup.cell+1)2.sup.16+n.sub.SCID,
where n.sub.s is a time slot index in a wireless frame and a range
of values is: n.sub.s={0, 1, 2, 3 . . . , 19}, N.sub.ID.sup.cell is
a notified serving cell identification, and n.sub.SCID is a
receiver identification-related parameter; the pilot symbol
sequence is generated according to a scrambling code sequence
generating method, and a pilot sequence generating method in the
3GPP RAN1 36.211 protocol; a received signal is demodulated, i.e.
the channel estimation is performed by using the generated pilot
symbol sequence and the received signal. The received signal is a
demodulation reference signal; or when the receiver detects that
the length of the DCI after blind detection is an extension length,
the receiver generates the scrambling code sequence of the
demodulation pilot according to the virtual identification
signalling, wherein an initial factor of the generated scrambling
code sequence of the demodulation pilot is:
c.sub.init=(n.sub.s/2+1)(2N.sub.ID.sup.virtual+1)2.sup.16+n.sub.SCID,
where n.sub.s is a time slot index in a wireless frame and a range
of values is n.sub.s={0, 1, 2, 3 . . . , 19}, N.sub.ID.sup.virtual
is the virtual identification signalling stored by the receiver,
and n.sub.SCID is a receiver identification-related parameter; the
pilot symbol sequence is generated according to a scrambling code
sequence generating method, and a pilot sequence generating method
in the 3GPP RAN1 36.211 protocol; a received signal is demodulated,
i.e. the channel estimation is performed by using the generated
pilot symbol sequence and the received signal. The received signal
is a demodulation reference signal.
Embodiment 5
[0057] FIG. 6 is a flowchart of the fifth embodiment for
implementing a method for notification of scrambling code
identification signalling group according to the present
disclosure. As shown in FIG. 6, the present embodiment includes the
following signalling steps:
[0058] Step 601: a network side transmits a virtual identification
to a receiver through an SIB or an RRC signalling;
specifically, the network side transmits, through the SIB or the
RRC signalling, the virtual identification signalling to a receiver
which is able to identify such a signalling, wherein the virtual
identification signalling may include a virtual cell identification
and the virtual identification signalling may include one or more
virtual cell identifications. In the present embodiment, the SIB
may be SIB2, SIB3, SIB4, SIB5, SIB13 or SIB14;
[0059] Step 602: the receiver stores the virtual identification
signalling in the received SIB or RRC signalling;
specifically, the receiver receives, on a corresponding sub-frame,
the virtual identification signalling sent by the network side
through the SIB or the RRC signalling; the physical layer of the
receiver performs a series of processing for the virtual
identification signalling, and the processed and decoded virtual
identification signalling is transmitted to a higher layer of the
receiver finally; meanwhile, the receiver may obtain the virtual
identification signalling from the SIB or the RRC signalling, store
the virtual identification signalling and update the virtual
identification signalling according to an updating period of the
SIB or the RRC signalling; the receiver storing the virtual
identification signalling becomes a possible receiver which
generates a scrambling code sequence of a demodulation pilot
according to the virtual identification signalling;
[0060] Step 603: the receiver performs blind detection for DCI by
adding 1 bit;
specifically, the receiver receives DCI transmitted by the network
side. The DCI includes a virtual identification index signalling.
In the present embodiment, the receiver determines to perform blind
detection for the DCI by adding a 1-bit extension length, i.e. in a
format of DCI Format 2B or DCI Format 2C or a future format of the
DCI, the virtual identification signalling is increased by 1
bit.
[0061] Step 604: the receiver determines the virtual identification
signalling according to the virtual identification index signalling
obtained through blind detection, generates a scrambling code
sequence of a demodulation pilot according to the virtual
identification signalling, generates a pilot symbol sequence
according to the generated scrambling code sequence, and performs
channel estimation according to the pilot symbol sequence;
specifically, when the value of the virtual identification index
signalling is 0, the receiver generates the scrambling code
sequence of the demodulation pilot according to a serving cell
identification, wherein an initial factor of the generated
scrambling code sequence of the demodulation pilot is:
c.sub.init=(n.sub.s/2+1)(2N.sub.ID.sup.cell+1)2.sup.16+n.sub.SCID,
where n.sub.s is a time slot index in a wireless frame and a range
of values is: n.sub.s={0, 1, 2, 3 . . . , 19}, N.sub.ID.sup.cell is
a notified serving cell identification, and n.sub.SCID is a
receiver identification-related parameter; the pilot symbol
sequence is generated according to a scrambling code sequence
generating method, and a pilot sequence generating method in the
3GPP RAN1 36.211 protocol; a received signal is demodulated, i.e.
the channel estimation is performed by using the generated pilot
symbol sequence and the received signal. when the value of the
virtual identification index signalling is not 0, the receiver
generates the scrambling code sequence of the demodulation pilot
according to the virtual identification signalling, wherein an
initial factor of the generated scrambling code sequence of the
demodulation pilot is:
c.sub.init=(n.sub.s/2+1)(2N.sub.ID.sup.virtual+1)2.sup.16+n.sub-
.SCID, where n.sub.s is a time slot index in a wireless frame and a
range of values is n.sub.s={0, 1, 2, 3 . . . , 19},
N.sub.ID.sup.virtual is a notified virtual identification, and
n.sub.SCID is a receiver identification-related parameter; the
pilot symbol sequence is generated according to a scrambling code
sequence generating method, and a pilot sequence generating method
in the 3GPP RAN1 36.211 protocol; a received signal is demodulated,
i.e. the channel estimation is performed by using the generated
pilot symbol sequence and the received signal. The received signal
is a demodulation reference signal.
Embodiment 6
[0062] FIG. 7 is a flowchart of the sixth embodiment for
implementing a method for notification of scrambling code
identification signalling group according to the present
disclosure. As shown in FIG. 7, the present embodiment includes the
following steps:
[0063] Step 701 to Step 702 are the same as Step 601 to Step
602.
[0064] Step 703: the receiver performs blind detection for DCI by
adding log.sub.2 N bits;
specifically, the receiver receives DCI transmitted by the network
side. The DCI includes a virtual identification index signalling.
In the present embodiment, the receiver determines to perform blind
detection for the DCI by adding a log.sub.2 N-bit extension length,
i.e. in a format of DCI Format 2B or DCI Format 2C or a future
format of the DCI, the virtual identification signalling is
increased by log.sub.2 N bits;
[0065] Step 704: the receiver determines the virtual identification
signalling according to the virtual identification index signalling
obtained through blind detection, generates a scrambling code
sequence of a demodulation pilot according to the virtual
identification signalling, generates a pilot symbol sequence
according to the generated scrambling code sequence, and performs
channel estimation according to the pilot symbol sequence;
specifically, when the receiver detects that the virtual
identification index signalling is a serving cell identification
index, the receiver generates the scrambling code sequence of the
demodulation pilot according to a serving cell identification,
wherein an initial factor of the generated scrambling code sequence
of the demodulation pilot is:
c.sub.init=(n.sub.s/2+1)(2N.sub.ID.sup.cell+1)2.sup.16+n.sub.SCID,
where n.sub.s is a time slot index in a wireless frame and a range
of values is: n.sub.s={0, 1, 2, 3 . . . , 19}, N.sub.ID.sup.cell is
a notified serving cell identification, and n.sub.SCID is a
receiver identification-related parameter; the pilot symbol
sequence is generated according to a scrambling code sequence
generating method, and a pilot sequence generating method in the
3GPP RAN1 36.211 protocol; a received signal is demodulated, i.e.
the channel estimation is performed by using the generated pilot
symbol sequence and the received signal; when the receiver detects
that the virtual identification index signalling is not a serving
cell identification index, the receiver generates the scrambling
code sequence of the demodulation pilot according to the virtual
identification signalling, wherein an initial factor of the
generated scrambling code sequence of the demodulation pilot is:
c.sub.init=(n.sub.s/2+1)(2N.sub.ID.sup.virtual+1)2.sup.16+n.sub.SCID,
where n.sub.s is a time slot index in a wireless frame and a range
of values is n.sub.s={0, 1, 2, 3 . . . , 19}, N.sub.ID.sup.virtual
is a notified virtual identification, and n.sub.SCID is a receiver
identification-related parameter; the pilot symbol sequence is
generated according to a scrambling code sequence generating
method, and a pilot sequence generating method in the 3GPP RAN1
36.211 protocol; a received signal is demodulated, i.e. the channel
estimation is performed by using the generated pilot symbol
sequence and the received signal. The received signal is a
demodulation reference signal.
Embodiment 7
[0066] FIG. 8 is a flowchart of the seventh embodiment for
implementing a method for notification of scrambling code
identification signalling group according to the present
disclosure. As shown in FIG. 8, the present embodiment includes the
following steps:
[0067] Step 801: a receiver obtains a virtual identification
signalling;
specifically, the receiver obtains the virtual identification
signalling of a network side according to a physical cell
identification sent by the network side, or other known control
information, or standard and fixed virtual identification
configuration applicable to the network side and the receiver,
wherein the virtual identification signalling may include a virtual
cell identification and the virtual identification signalling may
include one or more virtual cell identifications;
[0068] Step 802: the receiver performs blind detection for DCI by
adding log.sub.2 N bits; specifically, the receiver receives DCI
transmitted by the network side. The DCI includes a virtual
identification index signalling. In the present embodiment, the
receiver determines, according to the virtual identification index
signalling, to perform blind detection for the DCI by adding a
log.sub.2 N-bit extension length, where N is the number of virtual
cell identifications in the virtual identification signalling, i.e.
in a format of DCI Format 2B or DCI Format 2C or a future format of
the DCI, the virtual identification signalling is increased by
log.sub.2 N bits;
[0069] Step 803: the receiver determines the virtual identification
signalling according to the virtual identification index signalling
obtained through blind detection, generates a scrambling code
sequence of a demodulation pilot according to the virtual
identification signalling, generates a pilot symbol sequence
according to the generated scrambling code sequence, and performs
channel estimation according to the pilot symbol sequence;
specifically, when the receiver detects that the virtual
identification index signalling is a serving cell identification
index, the receiver generates the scrambling code sequence of the
demodulation pilot according to a serving cell identification,
wherein an initial factor of the generated scrambling code sequence
of the demodulation pilot is:
c.sub.init=(n.sub.s/2+1)(2N.sub.ID.sup.cell+1)2.sup.16+n.sub.SCID,
where n.sub.s is a time slot index in a wireless frame and a range
of values is: n.sub.s={0, 1, 2, 3 . . . , 19}, N.sub.ID.sup.cell is
a notified serving cell identification, and n.sub.SCID is a
receiver identification-related parameter; the pilot symbol
sequence is generated according to a scrambling code sequence
generating method, and a pilot sequence generating method in the
3GPP RAN1 36.211 protocol; a received signal is demodulated, i.e.
the channel estimation is performed by using the generated pilot
symbol sequence and the received signal; when the receiver detects
that the virtual identification index signalling is not a serving
cell identification index, the receiver generates the scrambling
code sequence of the demodulation pilot according to the virtual
identification signalling, wherein an initial factor of the
generated scrambling code sequence of the demodulation pilot is:
c.sub.init=(n.sub.s/2+1)(2N.sub.ID.sup.virtual+1)2.sup.16+n.sub.SCID,
where n.sub.s is a time slot index in a wireless frame and a range
of values is n.sub.s={0, 1, 2, 3 . . . , 19}, N.sub.ID.sup.virtual
is a notified virtual identification, and n.sub.SCID is a receiver
identification-related parameter; the pilot symbol sequence is
generated according to a scrambling code sequence generating
method, and a pilot sequence generating method in the 3GPP RAN1
36.211 protocol; a received signal is demodulated, i.e. the channel
estimation is performed by using the generated pilot symbol
sequence and the received signal. The received signal is a
demodulation reference signal.
Embodiment 8
[0070] FIG. 9 is a flowchart of the eighth embodiment for
implementing a method for notification of scrambling code
identification signalling group according to the present
disclosure. As shown in FIG. 9, the present embodiment includes the
following steps:
[0071] Step 901: a receiver obtains a virtual identification
signalling;
specifically, the receiver obtains the virtual identification
signalling of a network side according to a physical cell
identification sent by the network side, or other known control
information, or standard and fixed virtual identification
configuration applicable to the network side or the receiver,
wherein the virtual identification signalling may include a virtual
cell identification and the virtual identification signalling may
include one or more virtual cell identifications;
[0072] Step 902: the receiver stores the obtained virtual
identification signalling;
specifically, the receiver stores the obtained virtual
identification signalling, and the receiver storing the virtual
identification signalling becomes a possible receiver which
generates a scrambling code sequence according to the virtual
identification signalling.
[0073] Step 903: the network side indicates, through an RRC
signalling, whether the receiver is a potential virtual
identification signalling user;
specifically, when the receiver satisfies a certain condition, the
network side determines whether the receiver needs to become a
potential virtual identification signalling user according to a
channel environment where the receiver is located, and notifies,
through the RRC signalling, a determining result to notify whether
the receiver needs to become a potential virtual identification
signalling user, wherein when the RRC signalling carries a virtual
identification enabling signalling, the receiver can learn the
determining result through identifying an identification of the
virtual identification enabling signalling; in the present
embodiment, the virtual identification enabling signalling in the
RRC signalling is 1 bit, and a value represented by the 1 bit is 0,
1, Enable or Disable enumeration; for example, the certain
condition may be a reference information signal receiving power,
i.e. when the reference signal receiving power of the receiver
satisfies a set threshold, the network side determines whether the
receiver needs to become a potential virtual identification
signalling user according to the channel environment where the
receiver is located;
[0074] Step 904: when the receiver is a potential virtual
identification user, perform blind detection for DCI by adding 1
bit; when the receiver is not a potential virtual identification
user, perform blind detection for the DCI by adding 0 bit;
[0075] Specifically, the receiver receives DCI transmitted by the
network side. The DCI includes a virtual identification index
signalling. In the present embodiment, the receiver determines,
according to the virtual identification enabling signalling, to
perform blind detection for the DCI by adding a 1-bit extension
length or according to a normal length, i.e. in a format of DCI
Format 2B or DCI Format 2C or a future format of the DCI, the
virtual identification signalling is increased by 0 bit or 1 bit,
wherein when the value of the virtual identification enabling
signalling is 0 or Disable, the receiver is not a potential virtual
identification user and blind detection is performed for the DCI by
adding 0 bit, i.e. the blind detection is performed for the DCI
according to a normal length; when the value of the virtual
identification enabling signalling is 1 or Enable, the receiver is
a potential virtual identification user and the receiver performs
blind detection for the DCI by adding a 1-bit extension length.
[0076] Step 905: the receiver determines the virtual identification
signalling according to the virtual identification index signalling
obtained through blind detection, generates a scrambling code
sequence of a demodulation pilot according to the virtual
identification signalling, generates a pilot sequence according to
the generated scrambling code sequence, and performs channel
estimation according to the pilot symbol sequence;
specifically, when detecting that the length of the DCI after blind
detection is a normal length, the receiver generates the scrambling
code sequence of the demodulation pilot according to a serving cell
identification, wherein an initial factor of the generated
scrambling code sequence of the demodulation pilot is:
c.sub.init=(n.sub.s/2+1)(2N.sub.ID.sup.cell+1)2.sup.16+n.sub.SCID,
where n.sub.s is a time slot index in a wireless frame and a range
of values is: n.sub.s={0, 1, 2, 3 . . . , 19}, N.sub.ID.sup.cell is
a notified serving cell identification, and n.sub.SCID is a
receiver identification-related parameter; the pilot symbol
sequence is generated according to a scrambling code sequence
generating method, and a pilot sequence generating method in the
3GPP RAN1 36.211 protocol; a received signal is demodulated, i.e.
the channel estimation is performed by using the generated pilot
symbol sequence and the received signal. The received signal is a
demodulation reference signal; or when the receiver detects that
the length of the DCI after blind detection is an extension length,
the receiver generates the scrambling code sequence of the
demodulation pilot according to the virtual identification
signalling, wherein an initial factor of the generated scrambling
code sequence of the demodulation pilot is:
c.sub.init=(n.sub.s/2+1)(2N.sub.ID.sup.virtual+1)2.sup.16+n.sub.SCID,
where n.sub.s is a time slot index in a wireless frame and a range
of values is n.sub.s={0, 1, 2, 3 . . . , 19}, N.sub.ID.sup.virtual
is the virtual identification signalling stored by the receiver,
and n.sub.SCID is a receiver identification-related parameter; the
pilot symbol sequence is generated according to a scrambling code
sequence generating method, and a pilot sequence generating method
in the 3GPP RAN1 36.211 protocol; a received signal is demodulated,
i.e. the channel estimation is performed by the generated pilot
symbol sequence and the received signal. The received signal is a
demodulation reference signal.
Embodiment 9
[0077] FIG. 10 is a flowchart of the ninth embodiment for
implementing a method for notification of scrambling code
identification signalling group according to the present
disclosure. As shown in FIG. 10, the present embodiment includes
the following steps:
[0078] Step 1001: a receiver obtains a virtual identification
signalling;
specifically, the receiver obtains the virtual identification
signalling of a network side according to a physical cell
identification sent by the network side, or other known control
information, or standard and fixed virtual identification
configuration applicable to the network side and the receiver,
wherein the virtual identification signalling may include a virtual
cell identification and the virtual identification signalling may
include one or more virtual cell identifications;
[0079] Step 1002: the receiver performs blind detection for DCI by
adding 1 bit;
[0080] Specifically, the receiver receives DCI transmitted by the
network side. The DCI includes a virtual identification index
signalling. In the present embodiment, the receiver determines,
according to the virtual identification index signalling, to
perform blind detection for the DCI by adding a 1-bit extension
length, where N is the number of virtual cell identifications in
the virtual identification signalling, i.e. in a format of DCI
Format 2B or DCI Format 2C or a future format of the DCI, the
virtual identification signalling is increased by 1 bit;
[0081] Step 1003: the receiver determines the virtual
identification signalling according to the virtual identification
index signalling obtained through blind detection, generates a
scrambling code sequence of a demodulation pilot according to the
virtual identification signalling, generates a pilot symbol
sequence according to the generated scrambling code sequence, and
performs channel estimation according to the pilot symbol
sequence;
specifically, when detecting that the virtual identification index
signalling is a serving cell identification index, the receiver
generates the scrambling code sequence of the demodulation pilot
according to a serving cell identification, wherein an initial
factor of the generated scrambling code sequence of the
demodulation pilot is:
c.sub.init=(n.sub.s/2+1)(2N.sub.ID.sup.cell+1)2.sup.16+n.sub.SCID,
where n.sub.s is a time slot index in a wireless frame and a range
of values is: n.sub.s={0, 1, 2, 3 . . . , 19}, N.sub.ID.sup.cell is
a notified serving cell identification, and n.sub.SCID is a
receiver identification-related parameter; the pilot symbol
sequence is generated according to a scrambling code sequence
generating method, and a pilot sequence generating method in the
3GPP RAN1 36.211 protocol; a received signal is demodulated, i.e.
the channel estimation is performed by using the generated pilot
symbol sequence and the received signal; when the receiver detects
that the virtual identification index signalling is not a serving
cell identification index, the receiver generates the scrambling
code sequence of the demodulation pilot according to the virtual
identification signalling, wherein an initial factor of the
generated scrambling code sequence of the demodulation pilot is:
c.sub.init=(n.sub.s/2+1)(2N.sub.ID.sup.virtual+1)2.sup.16+n.sub.SCID,
where n.sub.s is a time slot index in a wireless frame and a range
of values is n.sub.s={0, 1, 2, 3 . . . , 19}, N.sub.ID.sup.virtual
is a notified virtual identification, and n.sub.SCID is a receiver
identification-related parameter; the pilot symbol sequence is
generated according to a scrambling code sequence generating
method, and a pilot sequence generating method in the 3GPP RAN1
36.211 protocol; a received signal is demodulated, i.e. the channel
estimation is performed by using the generated pilot symbol
sequence and the received signal. The received signal is a
demodulation reference signal.
Embodiment 10
[0082] FIG. 11 is a flowchart of the tenth embodiment for
implementing a method for notification of scrambling code
identification signalling group according to the present
disclosure. As shown in FIG. 11, the present embodiment includes
the following steps:
[0083] Step 1101: a receiver obtains a virtual identification
signalling;
specifically, the receiver obtains the virtual identification
signalling of a network side according to a physical cell
identification sent by the network side, or other known control
information, or standard and fixed virtual identification
configuration applicable to the network side and the receiver,
wherein the virtual identification signalling may include a virtual
cell identification and the virtual identification signalling may
include one or more virtual cell identifications;
[0084] Step 1102: the receiver stores the obtained virtual
identification signalling;
[0085] Specifically, the receiver stores the obtained virtual
identification signalling, and the receiver storing the virtual
identification signalling becomes a possible receiver which
generates a scrambling code sequence according to the virtual
identification signalling;
[0086] Step 1103: the network side indicates, through an RRC
signalling, whether the receiver is a potential virtual
identification signalling user;
[0087] Specifically, when the receiver satisfies a certain
condition, the network side determines whether the receiver needs
to become a potential virtual identification signalling user
according to a channel environment where the receiver is located,
and notifies, through the RRC signalling, a determining result to
notify whether the receiver needs to become a potential virtual
identification signalling user, wherein when the RRC signalling
carries a virtual identification enabling signalling, the receiver
can learn the determining result through identifying an
identification of the virtual identification enabling signalling;
in the present embodiment, the virtual identification enabling
signalling in the RRC signalling is 1 bit, and a value represented
by the 1 bit is 0, 1, Enable or Disable enumeration; for example,
the certain condition may be a reference information signal
receiving power, i.e. when the reference signal receiving power of
the receiver satisfies a set threshold, the network side determines
whether the receiver needs to become a potential virtual
identification signalling user according to the channel environment
where the receiver is located;
[0088] Step 1104: when the receiver is a potential virtual
identification user, perform blind
detection for DCI by adding log.sub.2 N bits; when the receiver is
not a potential virtual identification user, perform blind
detection for the DCI by adding 0 bit;
[0089] Specifically, the receiver receives DCI transmitted by the
network side. The DCI includes a virtual identification index
signalling. In the present embodiment, the receiver determines,
according to the virtual identification enabling signalling, to
perform blind detection for the DCI by adding a log.sub.2 N-bit
extension length or according to a normal length, i.e. in a format
of DCI Format 2B or DCI Format 2C or a future format of the DCI,
the virtual identification signalling is increased by 0 bit or
log.sub.2 N bits, wherein when the value of the virtual
identification enabling signalling is 0 or Disable, the receiver is
not a potential virtual identification user and blind detection is
performed for the DCI by adding 0 bit, i.e. the blind detection is
performed for the DCI according to a normal length; when the value
of the virtual identification enabling signalling is 1 or Enable,
the receiver is a potential virtual identification user and the
receiver performs blind detection for the DCI by adding a log.sub.2
N-bit extension length;
[0090] Step 1105: the receiver determines the virtual
identification signalling according to the virtual identification
index signalling obtained through blind detection, generates a
scrambling code sequence of a demodulation pilot according to the
virtual identification signalling, generates a pilot symbol
sequence according to the generated scrambling code sequence, and
performs channel estimation according to the pilot symbol
sequence;
[0091] Specifically, when the receiver detects that the length of
the DCI after blind detection is a normal length, the receiver
generates the scrambling code sequence of the demodulation pilot
according to a serving cell identification, wherein an initial
factor of the generated scrambling code sequence of the
demodulation pilot is:
c.sub.init=(n.sub.s/2+1)(2N.sub.ID.sup.cell+1)2.sup.16+n.sub.SCID,
where n.sub.s is a time slot index in a wireless frame and a range
of values is: n.sub.s={0, 1, 2, 3 . . . , 19}, N.sub.ID.sup.cell is
a notified serving cell identification, and n.sub.SCID is a
receiver identification-related parameter; the pilot symbol
sequence is generated according to a scrambling code sequence
generating method, and a pilot sequence generating method in the
3GPP RAN1 36.211 protocol; a received signal is demodulated, i.e.
the channel estimation is performed by using the generated pilot
symbol sequence and the received signal. The received signal is a
demodulation reference signal;
or when the receiver detects that the length of the DCI after blind
detection is an extension length, the receiver generates the
scrambling code sequence of the demodulation pilot according to the
virtual identification signalling, wherein an initial factor of the
generated scrambling code sequence of the demodulation pilot is:
c.sub.init=(n.sub.s/2+1)(2N.sub.ID.sup.virtual+1)2.sup.16+n.sub.SCID,
where n.sub.s is a time slot index in a wireless frame and a range
of values is n.sub.s={0, 1, 2, 3 . . . , 19}, N.sub.ID.sup.virtual
is the virtual identification signalling stored by the receiver,
and n.sub.SCID is a receiver identification-related parameter; the
pilot symbol sequence is generated according to a scrambling code
sequence generating method, and a pilot sequence generating method
in the 3GPP RAN1 36.211 protocol; a received signal is demodulated,
i.e. the channel estimation is performed by using the generated
pilot symbol sequence and the received signal. The received signal
is a demodulation reference signal.
[0092] In the above embodiments, the virtual identification
signalling may be also calculated directly or indirectly through
other obtained parameters; the other obtained parameters include a
n.sub.SCID parameter in DCI Format 2B, a n.sub.SCID parameter in
DCI Format 2C or a n.sub.SCID parameter in new DCI in a further
edition. At the moment, the length of the DCI is unchanged. The
n.sub.SCID is not completely equal to the n.sub.SCID parameters in
DCI Format 2B and DCI Format 2C, but a function of DCI Format 2B
and DCI Format 2C, and a function value or a functional relation of
the n.sub.SCID may be also notified through a virtual
identification group, wherein when performing calculation by using
n.sub.SCID, the value of N is 1. In addition, the cells in the
disclosure are a plurality of sets of CSI-RS resources configured
to the receiver, and each set of CSI-RS resources corresponds to a
cell.
[0093] To implement the methods above, the disclosure further
provides a system for notification of scrambling code
identification signalling group. FIG. 12 is a structural diagram
for implementing a system for notification of scrambling code
identification signalling group according to the present
disclosure. As shown in FIG. 12, the system includes: a network
side 121 and a receiver 122, wherein
the network side 121 is configured to transmit a scrambling code
identification signalling group to the receiver 122; the receiver
122 is configured to generate a corresponding scrambling code
sequence of a demodulation pilot according to the scrambling code
identification signalling group, generate a pilot symbol sequence
according to the scrambling code sequence of the demodulation
pilot, and perform channel estimation according to the pilot symbol
sequence.
[0094] The scrambling code identification signalling group includes
a virtual identification signalling, and/or a virtual
identification enabling signalling and/or a virtual identification
index signalling.
[0095] When the scrambling code identification signalling group
includes the virtual identification signalling, the virtual
identification enabling signalling and the virtual identification
index signalling, the step that the network side transmits the
scrambling code identification signalling group to the receiver,
and the receiver generates the corresponding scrambling code
sequence of the demodulation pilot according to the scrambling code
identification signalling group includes: the network side
transmits the virtual identification signalling to the receiver via
an SIB or an RRC signalling, and the receiver stores the virtual
identification signalling in the received SIB or RRC signalling;
the network side indicates whether the receiver is a potential
virtual identification signalling user through the RRC signalling,
performs blind detection for DCI by adding 1 bit when the receiver
is a potential virtual identification signalling user, and performs
blind detection for the DCI by adding 0 bit when the receiver is
not a potential virtual identification user; the receiver
determines the virtual identification signalling according to the
virtual identification index signalling obtained through the blind
detection, and generates the scrambling code sequence of the DMRS
according to the virtual identification signalling.
[0096] When the scrambling code identification signalling group
includes the virtual identification signalling, the virtual
identification enabling signalling and the virtual identification
index signalling, the step that the network side transmits the
scrambling code identification signalling group to the receiver,
and the receiver generates the corresponding scrambling code
sequence of the demodulation pilot according to the scrambling code
identification signalling group includes: the network side
transmits the virtual identification signalling to the receiver
through an SIB or RRC, and the receiver stores the virtual
identification signalling in the received SIB or RRC; the network
side indicates whether the receiver is a potential virtual
identification signalling user through the RRC signalling, performs
blind detection for received DCI by adding log.sub.2 N bits when
the receiver is a potential virtual identification user, and
performs blind detection for the DCI by adding 0 bit when the
receiver is not a potential virtual identification user; the
receiver determines the virtual identification signalling according
to the virtual identification index signalling obtained through the
blind detection, and generates the scrambling code sequence of the
DMRS according to the virtual identification signalling, wherein N
is the number of virtual cell identifications in the virtual
identification signalling.
[0097] When the scrambling code identification signalling group
includes the virtual identification signalling and the virtual
identification index signalling, the step that the network side
transmits the scrambling code identification signalling group to
the receiver, and the receiver generates the corresponding
scrambling code sequence of the demodulation pilot according to the
scrambling code identification signalling group includes: the
network side transmits the virtual identification signalling to the
receiver via an SIB or an RRC signalling, and the receiver stores
the virtual identification signalling in the received SIB or RRC
signalling; the receiver performs blind detection for DCI by adding
1 bit or log.sub.2 N bits, determines the virtual identification
signalling according to the virtual identification index signalling
obtained through the blind detection, and generates, the scrambling
code sequence of the demodulation pilot according to the virtual
identification signalling.
[0098] In the method above, the SIB is SIB2, SIB3, SIB4, SIB5,
SIB13 or SIB14.
[0099] When the scrambling code identification signalling group
includes the virtual identification index signalling, the step that
the terminal side generates the corresponding scrambling code
sequence of the demodulation pilot according to the scrambling code
identification signalling group includes: the receiver obtains the
virtual identification signalling, performs blind detection for DCI
by adding log.sub.2 N bits or 1 bit, determines the virtual
identification signalling according to the virtual identification
index signalling obtained through the blind detection, and
generates the scrambling code sequence of the demodulation pilot
according to the virtual identification signalling.
[0100] When the scrambling code identification signalling group
includes the virtual identification enabling signalling and the
virtual identification index signalling, the step that the network
side transmits the scrambling code identification signalling group
to the receiver, and the receiver generates the corresponding
scrambling code sequence of the demodulation pilot according to the
scrambling code identification signalling group, includes: the
receiver obtains the virtual identification signalling and stores
the obtained virtual identification signalling; the network side
indicates whether the receiver is a potential virtual
identification signalling user through an RRC signalling, performs
blind detection for DCI by adding 1 bit when the receiver is a
potential virtual identification user, and performs blind detection
for the DCI by adding 0 bit when the receiver is not a potential
virtual identification user; the receiver determines the virtual
identification signalling according to the virtual identification
index signalling obtained through the blind detection, and
generates the scrambling code sequence of the DMRS according to the
virtual identification signalling.
[0101] When the scrambling code identification signalling group
includes the virtual identification enabling signalling and the
virtual identification index signalling, the step that the network
side transmits the scrambling code identification signalling group
to the receiver, and the receiver generates the corresponding
scrambling code sequence of the demodulation pilot according to the
scrambling code identification signalling group, includes: the
receiver obtains the virtual identification signalling and stores
the obtained virtual identification signalling; the network side
indicates whether the receiver is a potential virtual
identification signalling user through an RRC signalling, performs
blind detection for DCI by adding log.sub.2 N bits when the
receiver is a potential virtual identification user, and performs
blind detection for the DCI by adding 0 bit when the receiver is
not a potential virtual identification user; the receiver
determines the virtual identification signalling according to the
virtual identification index signalling obtained through the blind
detection, and generates the scrambling code sequence of the
demodulation pilot according to the virtual identification
signalling.
[0102] The step that the receiver obtains the virtual
identification signal includes:
the receiver calculates the virtual identification signalling
directly or indirectly through other obtained parameters; the other
obtained parameters include a n.sub.SCID parameter in DCI Format
2B, a n.sub.SCID parameter in DCI Format 2C or a n.sub.SCID
parameter in new DCI, wherein when calculating by using n.sub.sID,
the value of N is 1. The addition of 0 bit in the disclosure is the
normal length.
[0103] The above are only preferred embodiments of the disclosure
and should not be used for limiting the protection scope of the
disclosure. Any modifications, equivalent replacements,
improvements or the like shall fall within the scope of protection
of the disclosure.
* * * * *